linux-kernel - Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

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Date:	Mon, 25 Aug 2008 09:23:46 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Will Marone <wjmarone@...il.com>
cc:	Jared Hulbert <jaredeh@...il.com>, Linux-kernel@...r.kernel.org,
	linux-embedded@...r.kernel.org,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	Jörn Engel <joern@...fs.org>,
	tim.bird@...SONY.COM
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

On Fri, 22 Aug 2008, Will Marone wrote:
> Geert Uytterhoeven wrote:
> > I gave AxFS a try on PS3 (ppc64, always use big-endian 64-bit for testing
> > new
> > code ;-).
> > When mounting the image, I got the crash below:
> >
> > | attempt to access beyond end of device
> > | loop0: rw=0, want=4920, limit=4912
> > | Unable to handle kernel paging request for data at address 0x00000028
> > | Faulting instruction address: 0xd000000000037988
> > | Oops: Kernel access of bad area, sig: 11 [#1]
> > | SMP NR_CPUS=2 PS3
> >
> > When mounting (also on PS3) an image created on ia32, I get a different
> > crash:
> >
> > | axfs: wrong magic
> >   ^^^^^^^^^^^^^^^^^
> > | Unable to handle kernel paging request for data at address 0x000003a8
> > | Faulting instruction address: 0xd0000000000355f0
> > | Oops: Kernel access of bad area, sig: 11 [#1]
> > | SMP NR_CPUS=2 PS
> Geert,
> 
> Thanks for giving it a spin, especially on a platform as different from ours
> as the PS3.
> 
> Before I dig more into what happened, I was wondering if you could tell me a
> bit more
> about your environment, particularly how you supplied the filesystem to the
> kernel and
> your mount commandline (also, if you used a boot commandline, what it was.)
> 
> My first guess would be a ppc64 compiled UML session, but I'd like to be a bit
> more sure.

Nope, I just built axfs as a module and insmoded it. After that

    mount image.axfs /mnt -o loop -t axfs

So nothing fancy.

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

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E-mail:   Geert.Uytterhoeven@...ycom.com
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